Patient education

Acne

Acne develops when hair follicles become clogged with oil and dead skin cells. It can cause blackheads, whiteheads, pimples, or deeper painful bumps.

Young adult with mild facial acne speaking with a supportive healthcare professional
Consistent care can control acne and reduce the chance of scarring.
Overview

About acne

Acne develops when hair follicles become clogged with oil and dead skin cells. It can cause blackheads, whiteheads, pimples, or deeper painful bumps.

Causes

What can cause it?

Acne forms when follicles become blocked by oil and dead skin cells and then become inflamed.

Hormones, family tendency, friction, oily products, stress, and some medicines can influence breakouts; acne is not caused by dirty skin.

Symptoms

What a patient may notice

Symptoms vary from person to person. Possible signs may include:

  • Blackheads or whiteheads
  • Red or pus-filled pimples
  • Painful nodules or scarring
Exams and Tests

How clinicians find the cause

Diagnosis is usually based on skin examination and the type and severity of lesions. A clinician may review menstrual patterns, medicines, hair or skin products, and signs of hormonal imbalance.

Treatment

Treatment and next steps

  1. 1

    Mild acne may improve with nonprescription products, while inflammatory, scarring, or persistent acne may need prescription topical or oral medicine.

  2. 2

    Treatment often requires consistent use for several weeks before improvement is clear.

  3. 3

    Pregnancy or pregnancy plans affect which acne medicines are safe.

Supporting recovery

  • Wash gently up to twice daily and after heavy sweating; avoid harsh scrubbing.
  • Use noncomedogenic moisturizer, sunscreen, cosmetics, and hair products.
  • Do not pick or squeeze lesions because this increases inflammation and scarring.
Outlook (Prognosis)

What to expect

Acne can usually be controlled, but improvement often requires consistent treatment for several weeks or months. Breakouts may return when treatment stops or triggers change. Early care for deep or painful acne can reduce permanent skin changes.

Possible complications

  • Permanent pitted or raised scars
  • Dark or red marks that remain after lesions heal
  • Emotional distress, reduced confidence, anxiety, or depression
Follow-up: Recheck if acne is painful, scarring, affecting mood, or not improving after a consistent treatment trial. Report significant medicine side effects promptly.
Medical guidance

When to Contact a Medical Professional

A healthcare professional can confirm the cause, discuss appropriate testing, and create a treatment or prevention plan for you.

Call 911 now

Get emergency help for severe trouble breathing, new chest pressure, fainting, seizure, sudden weakness on one side, uncontrolled bleeding, blue or gray lips, or a person who is difficult to wake.

Prevention

Ways to lower risk

  • Consistent skin care and early treatment can reduce new lesions and scarring.
  • Clean items that contact the face, such as phones, helmet straps, and pillowcases.
References

Trusted health information

This CHS patient-education page uses original wording and links to MedlinePlus for additional information.

MedlinePlus: Acne ↗